Week 3 is in the books! What a week for injuries. Several players suffered season-ending injuries, including New York Jets cornerback Darrelle Revis, who tore his left ACL and is expected to undergo season-ending surgery within the next few weeks. The Dallas Cowboys lost defensive back Barry Church to a torn right Achilles tendon. And Indianapolis Colts wide receiver Austin Collie, who was making his season debut after a delayed start because of concussion, suffered a season-ending patellar tendon rupture. Given Collie's extensive and serious injury history, his future in the NFL appears uncertain. As for the slate of other injuries, here's what we're looking at to start the week.

Quarterbacks

Matthew Stafford, Detroit Lions (leg): Stafford told the Detroit Free Press after Sunday's game that he felt a pull in his hamstring or glute area and he just couldn't run at full power, hence his fourth-quarter exit. He also indicated this was something he'd felt earlier in the week during practice and then it flared up during the game. He was scheduled for an MRI on Monday, but there has been little in the way of specifics since. As is his routine, head coach Jim Schwartz offered nothing substantial, but he did tell reporters he would make a decision about Stafford's status by Friday.

Matt Schaub, Houston Texans (ear): This might be a first, listing "ear" as the injured body part. Schaub took a vicious hit that knocked his helmet off, and he immediately grabbed the side of his head. The reason, it turned out, was the helmet took a piece of his left ear with it when it sailed off his head. Schaub, remarkably, missed only one play. He also visited the locker room in the third quarter for X-rays on his left shoulder (which obviously came back negative). Bruised but not broken, Schaub was back in practice Monday, according to the Texans' official website. Looks like it will be business as usual come Sunday.

Running Backs

C.J. Spiller had been putting up big numbers all season long before injuring his shoulder on Sunday. AP Photo/Tony Dejak

C.J. Spiller, Buffalo Bills (shoulder): Spiller went down hard on his left shoulder under the weight of his tackler and was in immediate visible pain. The two most common results from having the point of the shoulder driven into the turf are a broken clavicle (collarbone) (see: Ryan Mathews) or a sprained acromioclavicular (AC) joint, the joint where the tip of the shoulder blade or acromion (A) and the clavicle (C) meet. The AC joint is bound together by several ligaments; any ligamentous injury is a sprain, but if the sprain is severe enough to allow the bones to move apart, the injury is often referred to as a separated shoulder. In Spiller's case, the mechanism of injury combined with his response suggested something serious. It appears, however, that that is not the case.

The Bills have not formally declared the nature of Spiller's injury, referring to it only as his shoulder. During an appearance on "The Fred Jackson Show" in Buffalo on Monday night, Spiller said when asked what the injury was being called, "I'm not sure yet." Spiller noted that he had undergone several tests but, most importantly, commented on how much improvement there had been in just over 24 hours. "Actually, I'm very surprised the movement that we have in it," Spiller said. "I got the full range of motion, which is really weird when you have an injury like I do."

Spiller remained guarded about his availability for Week 4. "I definitely want to get out there, but we also want to be smart about it." According to the Buffalo News, head coach Chan Gailey said Spiller was unlikely to play but added the Bills were "not going to completely rule him out."

Reggie Bush, Miami Dolphins (knee): Bush left Sunday's game against the Jets in the first half with a left knee injury. He was seen limping slightly, then riding the stationary bike later. Bush, who has an injury history that includes a sprained PCL, a torn meniscus, a fractured fibula (the latter to his right leg) and several arthroscopic knee surgeries, underwent an MRI on Monday to assess the damage. The good news is that there was no major damage to report, and Bush has not yet been ruled out for Week 4. Until he gets through some practice reps, he is not a lock to play, but this is certainly more encouraging than initially thought. Unfortunately, there is a potential cumulative toll of these injuries on Bush's knee health over the long haul.

Willis McGahee, Denver Broncos (ribs): McGahee left Sunday's game against the Texans because of a rib injury. On Monday, the Denver Post reported McGahee's status as day-to-day according to head coach John Fox. Fox also indicated McGahee's injury involved the rib cartilage (which connects the ribs to the sternum). From a pain perspective, there isn't much difference. The ribs themselves can fracture, but the cartilage can also crack if the damage is significant enough. There are also numerous small muscles in the rib cage that can cause pain if bruised or torn. The problem with all of these injuries is they are often slow to completely heal, but the decision to play typically comes down to whether a player can perform in the presence of pain or not.

Wide Receivers

Miles Austin, Dallas Cowboys (rib): Austin left Sunday's game in the fourth quarter to get X-rays on his ribs. Clearly the results were negative since he returned to the game shortly thereafter and continued to add to his fantasy numbers. No one was talking about his hamstring or ribs after he posted more than 100 yards.

Darrius Heyward-Bey, Oakland Raiders (concussion/neck): The sight of any player lying motionless on the ground, then being spine boarded and transported to a hospital for evaluation, is frightening. The best news possible came the next day when it was announced that Heyward-Bey had been released from the hospital after suffering a neck strain and a concussion and that he is expected to make a full recovery. No fracture, no spinal cord injury. And no talk of football right now. As is the case with all athletes who sustain head injuries, Heyward Bey's progress will be monitored closely and his activity will be increased on a gradual basis.

Dexter McCluster, Kansas City Chiefs (elbow): McCluster landed awkwardly on an outstretched arm and his elbow appeared to buckle. He was in obvious pain and the medical staff tended to him briefly on the field before escorting him off. After the game, the Kansas City Star noted McCluster was in a sling, but the Chiefs have not offered a specific injury update since then. McCluster had been on the injury report the previous week with a shoulder injury. It would not be a surprise if he ends up missing at least this week.

Tight Ends

Jared Cook, Tennessee Titans (shoulder): Cook injured his shoulder late in the first half and it was reported by The Tennessean to be an AC sprain (see: C.J. Spiller note). Cook was in a sling following the game, but the Titans sound as if they expect him to be available in Week 4. Still, he'll need to show in practice that he can get his arm sufficiently elevated and absorb some contact through that side in order to play.

We're keeping an eye on

Ahmad Bradshaw, RB, New York Giants (neck): Bradshaw missed Week 3 with a neck injury and the team offered no details as to the specifics, including how much time he might miss. After visiting with team doctors Monday, however, Bradshaw, who had just received clearance to return to practice, tweeted the following: "Great news! Thanks everyone for ur thoughts and prayers. But u dnt understand, I'm Ready to rock #bigblue #health." Bradshaw's level of activity in practice this week should offer clues as to his readiness to return to play. Of course, teammate Andre Brown filled in admirably during Bradshaw's absence and he won't disappear completely when Bradshaw returns.

Fred Jackson might be able to return just in time to replace injured backfield mate C.J. Spiller. Ed Mulholland/US Presswire

Fred Jackson, RB, Buffalo Bills (knee): Jackson has made progress more quickly than anyone anticipated and looks as if he will return to practice this week. Shortly after suffering a sprained LCL, Jackson targeted the game against the Patriots in Week 4 as a return date. Now it's possible he may actually reach that goal. Jackson gave himself a "70-75 percent chance" of playing this Sunday, although even if he does return, the likelihood would be that he yields some of the work, perhaps to Tashard Choice if Spiller is out.

Matt Forte, RB, Chicago Bears (ankle): According to the Chicago Tribune, coach Lovie Smith says "hopefully" Forte will return to practice this week. That's still quite a ways removed from returning to play. The Bears are also working out running back Ryan Grant on Tuesday, according to ESPN Chicago.

Jeremy Maclin, WR, Philadelphia Eagles (hip): After sitting out Week 3 because of a hip injury, Maclin is expected to return to practice this week and be available Sunday.

Hakeem Nicks, WR, New York Giants (foot): Nicks missed the Thursday night game in Week 3 because of soreness in his surgically repaired foot. After the extra rest, he is expected to return in Week 4.